[xwiki-users] Getting java.io.IOException: Server returned HTTP response code: 403 for URL… But thru browser it works fine?

I have two web application hosted on two different tomcat instances say T1 and T2(xwiki is on T2). I am making below method in a java class on T1 to retrieve java xwikiUserObject named from T2 private Properties checkContentChanges() { Properties reply = null; try { String urlStr = " http://myApp:8080/wiki/bin/view/?checkContent=true&Name=dummy;" URL url; reply = new Properties(); try { url = new URL(urlStr); //sun.net.www.protocol.http.HttpURLConnection conn = (sun.net.www.protocol.http.HttpURLConnection) url .openConnection();//line 1 URLConnection conn = url .openConnection();// line 2 conn.addRequestProperty("User-Agent", "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)"); InputStream is = conn.getInputStream();// line3 reply.load(conn.getInputStream()); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace();//line 5 } } But at line 3 i am getting error java.io.IOException: Server returned HTTP response code: 403 for URL: http://myApp:8080/wiki/... Though the call goes to method on T2 and it returns expected user object. So T2 side works fine but once it return i get above exception at line 5 at T1 . I tried line 1 too instead of line 2 but same exception? As i tried to find it out on net especially on http://en.wikipedia.org/wiki/HTTP_403 looks like its due to some config on xwiki side. Not getting whats the exact issue? Though thru the brower same url works fine .